Knife



Patented lli/lar, 2i?, '1925,

MARGERTLTE 1E. HULL, 0F FURTLAND, OREGON.

KNIFE.

Application flied October 18, 1921. Serial io. 508,541.

To all whom t may concern.:

Be it known that I, MARGUnRrrn E. HULL,'.

a citizen of thellnited Sta-tes, residing at Portland, in the county ofMultnomah and t State of Oregon, have invented new and usefulimprovements in Knives, of which the following is a specification.

The object of my said invention is the pro vision of a knife, designedmore especially, 1u though not necessarily, for ripping purposes, andcharacterized by coinpactness, simplicity and strength in constructionand by the capacity to positively and strongly lock the blade inadvanced and working po- )le tion and also in retracted and idle andadequately guarded position.

Tothe attainment of 'the foregoing, the invention consists in theimprovement as hereinafter described and definitely claimed.

ln the accompanying drawings, forming l part of this specication Figure1 is a side elevation of the kn'ife as reduced to practice andsuccessfully used by me.

Figure 2 is a front end elevation of the saine.

Figure 3 is a top plan view of the knife.

Figure 4f is an enlarged transverse section taken in the plane indicatedby the line 4 4 au of Figure 3.

Figure 5 is a longitudinal section taken in the plane indicated by theline 5,-5 of Figure 1. 'i v Figure 6 is an enlarged detail longitudinalsection taken on the line 6 6 of Figure 3 and showing the manner inwhich the blade is secured lin its advanced and work ing position.

Figure 7 is a` section showing the knife as it appears when its handlesection 1 is re moved.

Similar numerals of reference designate corresponding parts in all ofthe views of the drawin s. l

The handle of my novel knife may be made of any material compatible withits purpose, and in the present embodiment the handle is composed of twoside by side sections 1 and 2, the said sections being riveted togetherat 3 or otherwise connected in any appropriate manner. The meeting sidesof the sections '1 and 2 are recessed as indicated by 4 in Figures iandy 5, and in the forward opposed portions of the members l1 and 2 t5"are formed channels 5 'to guide the blade 6 and to guard the forward endof the blade` when the blade is retracted as shown in Figure 7. In thehandle section 1 and extending throughout the thickness thereofis alongitudinal slot 8 having adjacent to its 00 ends lateral offsets orseats 9. The handle is further provided by preference with a ring 10,This, however, is not ofthe essence of my invention, and therefore thering 10 may be employed or may be altogether omitted without affectingmy invention as claimed.

As appears in Figure- 5 and also in Figure 7 the'blade 6 is formed of astrap of appropriate metal or other material possessed of resiliency andso arranged that its rear portion tends to spring in the directionindicated by the large arrow in Figure 5. On .the rear portion of thespring 6 is a finger piece 11, carried by a shank 12 that extendslaterally outward from the sprin 6 and through the slot 8, and on thesaid shank 12 is a lug 13, best shown in- Figures 4L, 5 and 6, the saidlug 13 being arranged inwardly from and in spaced relation to the fingeror thumbpiece 11,- and being adapted when the blade 6 is retracted tosnap into the rear offset or seat 9, and when the blade is projected, tosnap into the forward ed set or seat 9. The lug 13 will snap or be movedinto the offsets 9 by the resiliency of the rear portion of the bladeand will be securely maintained against casual release from the offsetsby the said resiliency of the blade portion. When, however, the blade isin projected position as appears in Figures 1, 3 and 5 and it is desiredto retract the blade so as to completely sheath the same in the handleit is simply necessary for the operator to exert inward pressure on thefinger or thumb piece, 11 so as to move thelug 13 inwardly from theforward offset 9 and then by longitudinal movement of the finger piece11 to draw the blade into the handle. When the luv 13 reaches a l0@position opposite 'the rear offset 9 and pressure is removed from thelinger piece 11, the spring portion of the blade will operate to seatthe lug 13 in the rear offset 9 with the result that the blade will bestrongly and 105 positively secured entirel within the handle. When itis desire to project Ythe blade it is simply necessary for the ope-ratorto unseat the lug 13 from the rear offset 9 and move the blade forwardlyand, 110

then release the finger or thumb piece 11 when the lug 13 Will be seatedin the for- Ward offset 9 of the handle.

The blade 6 may be of any approved type Without affecting my invention.In. the illustrated embodiment, however, the for- Ward end of the bladecomprises a portion 14 with a rounded sharpened edge 15, and a point 16referably sharpened at its inner edge an extending forwardly iush withthe edge of the blade remote from the edge from which the roundedportion 14 eX- tends. Manifestly in the use of my novel device the point16 is adapted to be used in starting a ripping operation, after whichthe said operation may be quickly completed by the use of the roundedand sharpened portion 14.

I have entered into a detailed description of the construction andrelative arrangement of the parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear and exactunderstanding of the said embodiment'. I do -not desire, however, to beunderstood as confinlng myself to the said specific construction andrelative arrangement of partev inasmuch as in the future practice of theinvention various changes and modifications may be made such as fallwithin the scope nf my invention as defined in my appended claim,

Having described my invention, what, I. claim and desire to secure byLetters Patent 1s A knife comprising a handle having in one of its sidesa longitudinal slot and an offset or seat in communication With saidslot, and a blade movable rectilinearly in the handle and having anintegral resilient; rear portion that is laterally deflected from theline of its forward portion and is movable rectilinearly with saidforward portion and is also movable laterally, and means on the saidresilient rear portion of the blade, movable in the lon gitudinal slot of the handle and carryin a lug movable into and out of the said o set orseat and yieldingly maintained in the offset or seat by the lateraldeflection and resilient of the rear portion of the blade.

In testimony whereof I affix my signature.

MARGUERITE E. HULL.

